Sprinkler for automatic fire-extinguishing systems.



W. ESTY, DECD.

C. w. TYLER. EXECUTOR- SPRINKLER FOR AUTOMATIC FIRE EXTINGUSHINGSYSTEMS.

APPUCATIQN FILED A UG.(21 1916- RENEWED MAY 7| 191. 1,230,469. PatentedJune 19, 1917.

2 SHEETS-SHEET I.

Willem? E g warm w. ESTY. DECD.

APPLICATION FILED AUGJZ. l9l6- RENEWED M-AY 7, I91

Patented June 19, 1917.

2 SHEETS-SHEET 2.

(1302 new UNITED STATES PATENT oF oE.

WILLIAM ESTY, OF LACONIA, NEW HAMPSHIRE; CHARLES WTTYLER, EXECUTOR OFSAID WILLIAM ESTY, DECEASED, ASSIGNOB TO ESTY SPRINKLER COMPANY, OFLACONIA, NEW HAMPSHIRE, A CORPORATION OF NEW HAMPSHIRE.

SPRINKLER FOB AUTOMATIC FIRE-EXTINGUISHING sY's'rEms.

Specification of Letters Patent.

Patented une'19, 1917.

Application filed August 12, 1916, Serial No. 114,582. Renewed May 7,1917. Serial 1W0. 167,065.

To all whom it may concern;

Be it known that I, WILLIAM Es'rY, of

Laconia, in the county of Belknap and State of New Hampshire, haveinvented a new- Sprinkler for Automatic Fire-Extinguishing Systems, ofwhich the following is a specification.

' Where automatic fire extinguishing systems equipped with sprinklerheads having fusible valve retainers have been used in buildings inwhich destructive gases abound in quantities, in the course of a fewyears the sprinkler heads become so loaded with foreign matter that theyfail to function properly in the event of a fire. It has heretoforebeenproposed to protect the sprinkler heads from the action of gases bymeans of a cover of glass. The present invention consists inimprovements upon.covered sprin kler heads. The object of theimprovement is to insure the complete protection of the valve, valveseat, and fusible element of the sprinkler; and to insure the promptrelease and removal of the cover in the event of a fire so that theescape of water will notbe substantially delayed.

The improvements are illustrated in the accompanying drawings whereinFigure 1, is a side elevation of the improved covered sprinkler head,parts being broken away to facilitate the'illustration. Fig. 2, is acentral longitudinal section. Figs. 3 and 10,

tween the valve and an abutment F, carried by a frame G. This frame hasa screw threaded collar H, which screws on to the section C, of thefitting. The side arms I, of the frame G, which connect the collar H,and the abutment F, are rendered resilient, each having a plurality ofreentrant bends J. By means of these bends the desired uniform recarriesa distributer K.

are concentric.

diameter than the disk Q, so that an annular groove exists between thetwo flanges T, and U. The lower open end of the glass silienceisreadilysecured. The frame also The strut consists of a multiplying lever L, avalve lever M, and a frame lever N, united together by fusible solder.

The sprinkler head, as thus far described,

. similarto that set forth in the above ment1oned patent, excepting thatin the present instance,- the resilienceof the frame is secured bytheplurality of reentrant'bendsof each of the side arms.

The cover 0, surrounds and covers the entire resilient frame, the valve;the: valve seat, and the fusible strut. It is desirably .made of glassto resistthe action of injurious gases. It is supported by twononcorrodible German silver disks P, and Q.

Theouter disk P, has-a circular opening R (Fig; 5), at its middle whichvfits over the section C, of the fitting, so that the disk rests uponthe shoulder B. The'inner disk Q, like- I wise has acentral circularopenin S (Fig. 4:), which fits overv the section C the inner disk Q,rests upon the outer disk P,

Both disks having been put in place, the valve, strut and resilientframe are assembled, and the resilient frame is screweddown on thesection C, and tightly against the inis seated firmly and with an airtight fit upon the shoulder, B, and the two disks .are firmly clampedtogether. At the same so that so .ner disk Q. In this way, the outerdisk P, M

time, the requisite and predetermined tension. 1

is put upon the strut through the resilient frame in the mannerexplained 'in the afore said prior-patent.

i The outer disk P, has an upturned an- Q, has a similar flange U. Thetwo flanges The disk P,'is of greater cover fits into this groove. Thewidth of the groove is. greater than the thickness of the glass, thusproviding space for the insertion of a fusible cement such as paraflinwax, which is indicated at V. This fusible cement makes a gas tightjoint between the glass cover and the supporting disks. At the same timethe glass cover is firmly held in place without danger of movinglaterally as the result of jarring.

90 nular .peripheral flange T. The inner disk c ll:

In this manner thevalvo, valve seat, and fusible strut are inclosed in agas tight chamber.-

ln case of a fire the fusible cement V, readily melts, the heat isradiated through the glass and the fusible strut is released, thuspermitting the valve to open When the valve is-open the out-rushingwater (or air if a dry system is employed) blows ofi the glass coverwhich is readily displaced because of the melting of the cement V,

I claim:

1. A sprinkler for automatic fire extin guishing systems having, incombination, a fitting with a valve seat at its end and an outwardlyprojectingannular shoulder, and a screw threaded section between saidshoulder and the valve seatfa no'n-corrodible disk with a peripheralflange resting upon the said shoulder; a second non-corrodible disk witha peripheral flange resting upon the first named disk, the outer diskbeing of greater diameter than the inner disk so that an anular space orgroove is constituted between the two flanges; a valve on the valve seatof the fitting; a resilient frame screwing on to the aforesaid screwthreaded sec' tion of the fitting and seating against. the inner disk,thereby making an air tight joint between the disks and the shoulder ofthe fitting; a separable fusible strut between the valve and theresilient frame; a glass covl: fitting over the resilient frame, thevalve seat, and the strut, the open edge of said cover fitting into thegroove between the flanges of the two disks; and a fusible cement insaid groove forming an air tight joint between the glass cover and thedisks.

2. A sprinkler for automatic fire extinguishing systems having aresilient frame with two side arms, each side arm having a plurality ofre'ntrant bends.

3. A sprinkler for automatic fire extinguishing systems having,in'combination, a fitting with r. valve seat at its end and an outwardlyprojecting annular shoulder, and a screw threaded section between saidshoulder and the valve seat; a disk with a peripheral flange restingupon the said shoulder; a second disk with a peripheral flange restingupon the first named disk, the-outer disk being of greater diameter thanthe innor disk so that an annular space or groove isronstituted betweenthe two flanges; a valve on the valve seat of the fitting; a framescrewing on to the aforesaid screw threaded section of the fitting andseating against the inner diskythereby' making an mousse air tight jointbetween the disks and the shoulder of the fitting; a separable fusiblestrut between the valve and the resilient. frame; a cover fitting overthe frame. the

- valve seat, and. the strut, the open edge of fitting with a valve seatand. an outwardly projecting annular shoulder; a disk with a peripheralflange restin upon the said shoulder; a second disk with a peripheralflange resting upon the first nae-med disk, the outer disk being ofgreater diameter than the inner disk so that an annular space or grooveis constituted between the two flan es' a valve on the valve of the litas r n ting; a frame rastened to the ntting and seating againstthe innerdisk, thereby making an air tight joint between the disks and theshoulder of the fitting; a separable fusible strut between the valve andthe frame, a cover fitting over the frame, the valve seat, andthe strut,the open edge of said cover fitting into the groove between the flangesof the two disks; and a fusible cement said groove forming an. air tightioint between the glass cover and the 5. 'A sprinkler ior automatic lireguishing systems having, in combination, a fitting with an outwardlyprojecting shoulder and a valve seat; a disk with a per'iph eral flangeresting upon the said shoulder; a second disk with a peripheral restingupon the first named disk, the outer disk being of greater diameter thanthe inner disk so that an annular space or groove is constituted betweenthe two flanges; a valve on the valve seat of the fitting; a frameconnected with the fitting; a separable fusible strut between the valveand the frame; a cover fitting over the frame, the valve seat, and thestrut, the open edge of said cover fitting into the groove between theflanges of the two disks; and a fusible cement in said groove forming anair tight joint between the glass cover and the disks.

In witness whereof, l have hereunto si 1 ed my name in the presence oftwo seibscribing witnesses.

ll llJLlAl l Witnesses:

nicer Esrr, llnnrnn -l. Game.

